export function useOfflineData(){
  var offline_data = {
    "update_time": "2023-04-20 12:00:02",
    "list": [
        {
            "pm": 1,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "固原",
            "province": "宁夏"
        },
        {
            "pm": 2,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "临汾",
            "province": "山西"
        },
        {
            "pm": 3,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "临夏",
            "province": "甘肃"
        },
        {
            "pm": 4,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "天水",
            "province": "甘肃"
        },
        {
            "pm": 5,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "平凉",
            "province": "甘肃"
        },
        {
            "pm": 6,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "定西",
            "province": "甘肃"
        },
        {
            "pm": 7,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "兰州",
            "province": "甘肃"
        },
        {
            "pm": 8,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "海北",
            "province": "青海"
        },
        {
            "pm": 9,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "海西",
            "province": "青海"
        },
        {
            "pm": 10,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "黄南",
            "province": "青海"
        },
        {
            "pm": 11,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "喀什",
            "province": "新疆"
        },
        {
            "pm": 12,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "海南",
            "province": "青海"
        },
        {
            "pm": 13,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "杨凌",
            "province": "陕西"
        },
        {
            "pm": 14,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "铜川",
            "province": "陕西"
        },
        {
            "pm": 15,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "宝鸡",
            "province": "陕西"
        },
        {
            "pm": 16,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "商洛",
            "province": "陕西"
        },
        {
            "pm": 17,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "渭南",
            "province": "陕西"
        },
        {
            "pm": 18,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "咸阳",
            "province": "陕西"
        },
        {
            "pm": 19,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "西安",
            "province": "陕西"
        },
        {
            "pm": 20,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "运城",
            "province": "山西"
        },
        {
            "pm": 21,
            "aqi": 500,
            "aqi_level": "严重",
            "city": "甘南",
            "province": "甘肃"
        },
        {
            "pm": 22,
            "aqi": 496,
            "aqi_level": "严重",
            "city": "西宁",
            "province": "青海"
        },
        {
            "pm": 23,
            "aqi": 494,
            "aqi_level": "严重",
            "city": "中卫",
            "province": "宁夏"
        },
        {
            "pm": 24,
            "aqi": 493,
            "aqi_level": "严重",
            "city": "阿克苏",
            "province": "新疆"
        },
        {
            "pm": 25,
            "aqi": 490,
            "aqi_level": "严重",
            "city": "白银",
            "province": "甘肃"
        },
        {
            "pm": 26,
            "aqi": 393,
            "aqi_level": "严重",
            "city": "晋中",
            "province": "山西"
        },
        {
            "pm": 27,
            "aqi": 388,
            "aqi_level": "严重",
            "city": "海东",
            "province": "青海"
        },
        {
            "pm": 28,
            "aqi": 315,
            "aqi_level": "严重",
            "city": "阿拉善盟",
            "province": "内蒙古"
        },
        {
            "pm": 29,
            "aqi": 285,
            "aqi_level": "重度",
            "city": "吕梁",
            "province": "山西"
        },
        {
            "pm": 30,
            "aqi": 280,
            "aqi_level": "重度",
            "city": "庆阳",
            "province": "甘肃"
        },
        {
            "pm": 31,
            "aqi": 223,
            "aqi_level": "重度",
            "city": "太原",
            "province": "山西"
        },
        {
            "pm": 32,
            "aqi": 213,
            "aqi_level": "重度",
            "city": "石家庄",
            "province": "河北"
        },
        {
            "pm": 33,
            "aqi": 212,
            "aqi_level": "重度",
            "city": "延安",
            "province": "陕西"
        },
        {
            "pm": 34,
            "aqi": 197,
            "aqi_level": "中度",
            "city": "石嘴山",
            "province": "宁夏"
        },
        {
            "pm": 35,
            "aqi": 192,
            "aqi_level": "中度",
            "city": "阳泉",
            "province": "山西"
        },
        {
            "pm": 36,
            "aqi": 180,
            "aqi_level": "中度",
            "city": "吴忠",
            "province": "宁夏"
        },
        {
            "pm": 37,
            "aqi": 174,
            "aqi_level": "中度",
            "city": "榆林",
            "province": "陕西"
        },
        {
            "pm": 38,
            "aqi": 171,
            "aqi_level": "中度",
            "city": "齐齐哈尔",
            "province": "黑龙江"
        },
        {
            "pm": 39,
            "aqi": 168,
            "aqi_level": "中度",
            "city": "呼伦贝尔",
            "province": "内蒙古"
        },
        {
            "pm": 40,
            "aqi": 167,
            "aqi_level": "中度",
            "city": "银川",
            "province": "宁夏"
        },
        {
            "pm": 41,
            "aqi": 161,
            "aqi_level": "中度",
            "city": "邢台",
            "province": "河北"
        },
        {
            "pm": 42,
            "aqi": 158,
            "aqi_level": "中度",
            "city": "松原",
            "province": "吉林"
        },
        {
            "pm": 43,
            "aqi": 158,
            "aqi_level": "中度",
            "city": "三门峡",
            "province": "河南"
        },
        {
            "pm": 44,
            "aqi": 154,
            "aqi_level": "中度",
            "city": "巴音郭楞",
            "province": "新疆"
        },
        {
            "pm": 45,
            "aqi": 153,
            "aqi_level": "中度",
            "city": "沧州",
            "province": "河北"
        },
        {
            "pm": 46,
            "aqi": 153,
            "aqi_level": "中度",
            "city": "衡水",
            "province": "河北"
        },
        {
            "pm": 47,
            "aqi": 150,
            "aqi_level": "轻度",
            "city": "保定",
            "province": "河北"
        },
        {
            "pm": 48,
            "aqi": 147,
            "aqi_level": "轻度",
            "city": "大庆",
            "province": "黑龙江"
        },
        {
            "pm": 49,
            "aqi": 141,
            "aqi_level": "轻度",
            "city": "吐鲁番",
            "province": "新疆"
        },
        {
            "pm": 50,
            "aqi": 141,
            "aqi_level": "轻度",
            "city": "忻州",
            "province": "山西"
        },
        {
            "pm": 51,
            "aqi": 140,
            "aqi_level": "轻度",
            "city": "长治",
            "province": "山西"
        },
        {
            "pm": 52,
            "aqi": 135,
            "aqi_level": "轻度",
            "city": "武威",
            "province": "甘肃"
        },
        {
            "pm": 53,
            "aqi": 135,
            "aqi_level": "轻度",
            "city": "绥化",
            "province": "黑龙江"
        },
        {
            "pm": 54,
            "aqi": 133,
            "aqi_level": "轻度",
            "city": "安阳",
            "province": "河南"
        },
        {
            "pm": 55,
            "aqi": 133,
            "aqi_level": "轻度",
            "city": "营口",
            "province": "辽宁"
        },
        {
            "pm": 56,
            "aqi": 125,
            "aqi_level": "轻度",
            "city": "七台河",
            "province": "黑龙江"
        },
        {
            "pm": 57,
            "aqi": 125,
            "aqi_level": "轻度",
            "city": "洛阳",
            "province": "河南"
        },
        {
            "pm": 58,
            "aqi": 124,
            "aqi_level": "轻度",
            "city": "襄阳",
            "province": "湖北"
        },
        {
            "pm": 59,
            "aqi": 123,
            "aqi_level": "轻度",
            "city": "鸡西",
            "province": "黑龙江"
        },
        {
            "pm": 60,
            "aqi": 122,
            "aqi_level": "轻度",
            "city": "临沧",
            "province": "云南"
        },
        {
            "pm": 61,
            "aqi": 122,
            "aqi_level": "轻度",
            "city": "红河",
            "province": "云南"
        },
        {
            "pm": 62,
            "aqi": 122,
            "aqi_level": "轻度",
            "city": "荆州",
            "province": "湖北"
        },
        {
            "pm": 63,
            "aqi": 122,
            "aqi_level": "轻度",
            "city": "晋城",
            "province": "山西"
        },
        {
            "pm": 64,
            "aqi": 122,
            "aqi_level": "轻度",
            "city": "辽阳",
            "province": "辽宁"
        },
        {
            "pm": 65,
            "aqi": 121,
            "aqi_level": "轻度",
            "city": "文山",
            "province": "云南"
        },
        {
            "pm": 66,
            "aqi": 118,
            "aqi_level": "轻度",
            "city": "酒泉",
            "province": "甘肃"
        },
        {
            "pm": 67,
            "aqi": 117,
            "aqi_level": "轻度",
            "city": "昆玉",
            "province": "新疆"
        },
        {
            "pm": 68,
            "aqi": 117,
            "aqi_level": "轻度",
            "city": "济源",
            "province": "河南"
        },
        {
            "pm": 69,
            "aqi": 117,
            "aqi_level": "轻度",
            "city": "鹤壁",
            "province": "河南"
        },
        {
            "pm": 70,
            "aqi": 116,
            "aqi_level": "轻度",
            "city": "邯郸",
            "province": "河北"
        },
        {
            "pm": 71,
            "aqi": 114,
            "aqi_level": "轻度",
            "city": "仙桃",
            "province": "湖北"
        },
        {
            "pm": 72,
            "aqi": 114,
            "aqi_level": "轻度",
            "city": "濮阳",
            "province": "河南"
        },
        {
            "pm": 73,
            "aqi": 113,
            "aqi_level": "轻度",
            "city": "哈尔滨",
            "province": "黑龙江"
        },
        {
            "pm": 74,
            "aqi": 112,
            "aqi_level": "轻度",
            "city": "普洱",
            "province": "云南"
        },
        {
            "pm": 75,
            "aqi": 111,
            "aqi_level": "轻度",
            "city": "和田",
            "province": "新疆"
        },
        {
            "pm": 76,
            "aqi": 111,
            "aqi_level": "轻度",
            "city": "德州",
            "province": "山东"
        },
        {
            "pm": 77,
            "aqi": 110,
            "aqi_level": "轻度",
            "city": "新乡",
            "province": "河南"
        },
        {
            "pm": 78,
            "aqi": 107,
            "aqi_level": "轻度",
            "city": "潜江",
            "province": "湖北"
        },
        {
            "pm": 79,
            "aqi": 106,
            "aqi_level": "轻度",
            "city": "鞍山",
            "province": "辽宁"
        },
        {
            "pm": 80,
            "aqi": 105,
            "aqi_level": "轻度",
            "city": "平顶山",
            "province": "河南"
        },
        {
            "pm": 81,
            "aqi": 105,
            "aqi_level": "轻度",
            "city": "荆门",
            "province": "湖北"
        },
        {
            "pm": 82,
            "aqi": 104,
            "aqi_level": "轻度",
            "city": "玉溪",
            "province": "云南"
        },
        {
            "pm": 83,
            "aqi": 103,
            "aqi_level": "轻度",
            "city": "焦作",
            "province": "河南"
        },
        {
            "pm": 84,
            "aqi": 102,
            "aqi_level": "轻度",
            "city": "长春",
            "province": "吉林"
        },
        {
            "pm": 85,
            "aqi": 101,
            "aqi_level": "轻度",
            "city": "盘锦",
            "province": "辽宁"
        },
        {
            "pm": 86,
            "aqi": 101,
            "aqi_level": "轻度",
            "city": "廊坊",
            "province": "河北"
        },
        {
            "pm": 87,
            "aqi": 100,
            "aqi_level": "良",
            "city": "济南",
            "province": "山东"
        },
        {
            "pm": 88,
            "aqi": 100,
            "aqi_level": "良",
            "city": "漯河",
            "province": "河南"
        },
        {
            "pm": 89,
            "aqi": 99,
            "aqi_level": "良",
            "city": "益阳",
            "province": "湖南"
        },
        {
            "pm": 90,
            "aqi": 97,
            "aqi_level": "良",
            "city": "唐山",
            "province": "河北"
        },
        {
            "pm": 91,
            "aqi": 97,
            "aqi_level": "良",
            "city": "肇庆",
            "province": "广东"
        },
        {
            "pm": 92,
            "aqi": 97,
            "aqi_level": "良",
            "city": "徐州",
            "province": "江苏"
        },
        {
            "pm": 93,
            "aqi": 97,
            "aqi_level": "良",
            "city": "乌海",
            "province": "内蒙古"
        },
        {
            "pm": 94,
            "aqi": 96,
            "aqi_level": "良",
            "city": "郑州",
            "province": "河南"
        },
        {
            "pm": 95,
            "aqi": 95,
            "aqi_level": "良",
            "city": "随州",
            "province": "湖北"
        },
        {
            "pm": 96,
            "aqi": 95,
            "aqi_level": "良",
            "city": "莱芜",
            "province": "山东"
        },
        {
            "pm": 97,
            "aqi": 94,
            "aqi_level": "良",
            "city": "娄底",
            "province": "湖南"
        },
        {
            "pm": 98,
            "aqi": 94,
            "aqi_level": "良",
            "city": "宿州",
            "province": "安徽"
        },
        {
            "pm": 99,
            "aqi": 94,
            "aqi_level": "良",
            "city": "枣庄",
            "province": "山东"
        },
        {
            "pm": 100,
            "aqi": 94,
            "aqi_level": "良",
            "city": "阜新",
            "province": "辽宁"
        },
        {
            "pm": 101,
            "aqi": 93,
            "aqi_level": "良",
            "city": "济宁",
            "province": "山东"
        },
        {
            "pm": 102,
            "aqi": 93,
            "aqi_level": "良",
            "city": "周口",
            "province": "河南"
        },
        {
            "pm": 103,
            "aqi": 93,
            "aqi_level": "良",
            "city": "伊犁",
            "province": "新疆"
        },
        {
            "pm": 104,
            "aqi": 92,
            "aqi_level": "良",
            "city": "德宏",
            "province": "云南"
        },
        {
            "pm": 105,
            "aqi": 92,
            "aqi_level": "良",
            "city": "淄博",
            "province": "山东"
        },
        {
            "pm": 106,
            "aqi": 92,
            "aqi_level": "良",
            "city": "兴安盟",
            "province": "内蒙古"
        },
        {
            "pm": 107,
            "aqi": 91,
            "aqi_level": "良",
            "city": "沈阳",
            "province": "辽宁"
        },
        {
            "pm": 108,
            "aqi": 91,
            "aqi_level": "良",
            "city": "西双版纳",
            "province": "云南"
        },
        {
            "pm": 109,
            "aqi": 91,
            "aqi_level": "良",
            "city": "神农架",
            "province": "湖北"
        },
        {
            "pm": 110,
            "aqi": 91,
            "aqi_level": "良",
            "city": "可克达拉",
            "province": "新疆"
        },
        {
            "pm": 111,
            "aqi": 91,
            "aqi_level": "良",
            "city": "鄂尔多斯",
            "province": "内蒙古"
        },
        {
            "pm": 112,
            "aqi": 90,
            "aqi_level": "良",
            "city": "滨州",
            "province": "山东"
        },
        {
            "pm": 113,
            "aqi": 89,
            "aqi_level": "良",
            "city": "锦州",
            "province": "辽宁"
        },
        {
            "pm": 114,
            "aqi": 89,
            "aqi_level": "良",
            "city": "宿迁",
            "province": "江苏"
        },
        {
            "pm": 115,
            "aqi": 88,
            "aqi_level": "良",
            "city": "楚雄",
            "province": "云南"
        },
        {
            "pm": 116,
            "aqi": 88,
            "aqi_level": "良",
            "city": "聊城",
            "province": "山东"
        },
        {
            "pm": 117,
            "aqi": 87,
            "aqi_level": "良",
            "city": "承德",
            "province": "河北"
        },
        {
            "pm": 118,
            "aqi": 87,
            "aqi_level": "良",
            "city": "葫芦岛",
            "province": "辽宁"
        },
        {
            "pm": 119,
            "aqi": 87,
            "aqi_level": "良",
            "city": "白城",
            "province": "吉林"
        },
        {
            "pm": 120,
            "aqi": 86,
            "aqi_level": "良",
            "city": "许昌",
            "province": "河南"
        },
        {
            "pm": 121,
            "aqi": 85,
            "aqi_level": "良",
            "city": "延边",
            "province": "吉林"
        },
        {
            "pm": 122,
            "aqi": 85,
            "aqi_level": "良",
            "city": "张掖",
            "province": "甘肃"
        },
        {
            "pm": 123,
            "aqi": 85,
            "aqi_level": "良",
            "city": "保山",
            "province": "云南"
        },
        {
            "pm": 124,
            "aqi": 84,
            "aqi_level": "良",
            "city": "亳州",
            "province": "安徽"
        },
        {
            "pm": 125,
            "aqi": 84,
            "aqi_level": "良",
            "city": "泰安",
            "province": "山东"
        },
        {
            "pm": 126,
            "aqi": 83,
            "aqi_level": "良",
            "city": "十堰",
            "province": "湖北"
        },
        {
            "pm": 127,
            "aqi": 83,
            "aqi_level": "良",
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            "pm": 256,
            "aqi": 47,
            "aqi_level": "优",
            "city": "石河子",
            "province": "新疆"
        },
        {
            "pm": 257,
            "aqi": 46,
            "aqi_level": "优",
            "city": "日照",
            "province": "山东"
        },
        {
            "pm": 258,
            "aqi": 46,
            "aqi_level": "优",
            "city": "株洲",
            "province": "湖南"
        },
        {
            "pm": 259,
            "aqi": 46,
            "aqi_level": "优",
            "city": "眉山",
            "province": "四川"
        },
        {
            "pm": 260,
            "aqi": 45,
            "aqi_level": "优",
            "city": "包头",
            "province": "内蒙古"
        },
        {
            "pm": 261,
            "aqi": 45,
            "aqi_level": "优",
            "city": "深圳",
            "province": "广东"
        },
        {
            "pm": 262,
            "aqi": 45,
            "aqi_level": "优",
            "city": "文昌",
            "province": "海南"
        },
        {
            "pm": 263,
            "aqi": 44,
            "aqi_level": "优",
            "city": "临高",
            "province": "海南"
        },
        {
            "pm": 264,
            "aqi": 44,
            "aqi_level": "优",
            "city": "重庆",
            "province": "重庆"
        },
        {
            "pm": 265,
            "aqi": 43,
            "aqi_level": "优",
            "city": "揭阳",
            "province": "广东"
        },
        {
            "pm": 266,
            "aqi": 43,
            "aqi_level": "优",
            "city": "广安",
            "province": "四川"
        },
        {
            "pm": 267,
            "aqi": 43,
            "aqi_level": "优",
            "city": "铜仁",
            "province": "贵州"
        },
        {
            "pm": 268,
            "aqi": 43,
            "aqi_level": "优",
            "city": "湘西",
            "province": "湖南"
        },
        {
            "pm": 269,
            "aqi": 42,
            "aqi_level": "优",
            "city": "无锡",
            "province": "江苏"
        },
        {
            "pm": 270,
            "aqi": 42,
            "aqi_level": "优",
            "city": "德阳",
            "province": "四川"
        },
        {
            "pm": 271,
            "aqi": 42,
            "aqi_level": "优",
            "city": "保亭",
            "province": "海南"
        },
        {
            "pm": 272,
            "aqi": 41,
            "aqi_level": "优",
            "city": "澄迈",
            "province": "海南"
        },
        {
            "pm": 273,
            "aqi": 41,
            "aqi_level": "优",
            "city": "苏州",
            "province": "江苏"
        },
        {
            "pm": 274,
            "aqi": 41,
            "aqi_level": "优",
            "city": "乐东",
            "province": "海南"
        },
        {
            "pm": 275,
            "aqi": 40,
            "aqi_level": "优",
            "city": "来宾",
            "province": "广西"
        },
        {
            "pm": 276,
            "aqi": 40,
            "aqi_level": "优",
            "city": "琼海",
            "province": "海南"
        },
        {
            "pm": 277,
            "aqi": 40,
            "aqi_level": "优",
            "city": "厦门",
            "province": "福建"
        },
        {
            "pm": 278,
            "aqi": 40,
            "aqi_level": "优",
            "city": "三亚",
            "province": "海南"
        },
        {
            "pm": 279,
            "aqi": 40,
            "aqi_level": "优",
            "city": "台北",
            "province": "台湾"
        },
        {
            "pm": 280,
            "aqi": 40,
            "aqi_level": "优",
            "city": "昭通",
            "province": "云南"
        },
        {
            "pm": 281,
            "aqi": 40,
            "aqi_level": "优",
            "city": "白山",
            "province": "吉林"
        },
        {
            "pm": 282,
            "aqi": 40,
            "aqi_level": "优",
            "city": "绍兴",
            "province": "浙江"
        },
        {
            "pm": 283,
            "aqi": 40,
            "aqi_level": "优",
            "city": "锡林郭勒",
            "province": "内蒙古"
        },
        {
            "pm": 284,
            "aqi": 40,
            "aqi_level": "优",
            "city": "天门",
            "province": "湖北"
        },
        {
            "pm": 285,
            "aqi": 40,
            "aqi_level": "优",
            "city": "博尔塔拉",
            "province": "新疆"
        },
        {
            "pm": 286,
            "aqi": 40,
            "aqi_level": "优",
            "city": "双河",
            "province": "新疆"
        },
        {
            "pm": 287,
            "aqi": 39,
            "aqi_level": "优",
            "city": "丽江",
            "province": "云南"
        },
        {
            "pm": 288,
            "aqi": 39,
            "aqi_level": "优",
            "city": "珠海",
            "province": "广东"
        },
        {
            "pm": 289,
            "aqi": 39,
            "aqi_level": "优",
            "city": "玉树",
            "province": "青海"
        },
        {
            "pm": 290,
            "aqi": 38,
            "aqi_level": "优",
            "city": "鹤岗",
            "province": "黑龙江"
        },
        {
            "pm": 291,
            "aqi": 38,
            "aqi_level": "优",
            "city": "宜春",
            "province": "江西"
        },
        {
            "pm": 292,
            "aqi": 38,
            "aqi_level": "优",
            "city": "桂林",
            "province": "广西"
        },
        {
            "pm": 293,
            "aqi": 38,
            "aqi_level": "优",
            "city": "日喀则",
            "province": "西藏"
        },
        {
            "pm": 294,
            "aqi": 38,
            "aqi_level": "优",
            "city": "绵阳",
            "province": "四川"
        },
        {
            "pm": 295,
            "aqi": 37,
            "aqi_level": "优",
            "city": "清远",
            "province": "广东"
        },
        {
            "pm": 296,
            "aqi": 37,
            "aqi_level": "优",
            "city": "伊春",
            "province": "黑龙江"
        },
        {
            "pm": 297,
            "aqi": 36,
            "aqi_level": "优",
            "city": "高雄",
            "province": "台湾"
        },
        {
            "pm": 298,
            "aqi": 36,
            "aqi_level": "优",
            "city": "柳州",
            "province": "广西"
        },
        {
            "pm": 299,
            "aqi": 36,
            "aqi_level": "优",
            "city": "乐山",
            "province": "四川"
        },
        {
            "pm": 300,
            "aqi": 36,
            "aqi_level": "优",
            "city": "毕节",
            "province": "贵州"
        },
        {
            "pm": 301,
            "aqi": 35,
            "aqi_level": "优",
            "city": "潮州",
            "province": "广东"
        },
        {
            "pm": 302,
            "aqi": 35,
            "aqi_level": "优",
            "city": "怒江",
            "province": "云南"
        },
        {
            "pm": 303,
            "aqi": 35,
            "aqi_level": "优",
            "city": "上饶",
            "province": "江西"
        },
        {
            "pm": 304,
            "aqi": 35,
            "aqi_level": "优",
            "city": "赤峰",
            "province": "内蒙古"
        },
        {
            "pm": 305,
            "aqi": 34,
            "aqi_level": "优",
            "city": "阿勒泰",
            "province": "新疆"
        },
        {
            "pm": 306,
            "aqi": 34,
            "aqi_level": "优",
            "city": "万宁",
            "province": "海南"
        },
        {
            "pm": 307,
            "aqi": 34,
            "aqi_level": "优",
            "city": "惠州",
            "province": "广东"
        },
        {
            "pm": 308,
            "aqi": 34,
            "aqi_level": "优",
            "city": "成都",
            "province": "四川"
        },
        {
            "pm": 309,
            "aqi": 34,
            "aqi_level": "优",
            "city": "湖州",
            "province": "浙江"
        },
        {
            "pm": 310,
            "aqi": 34,
            "aqi_level": "优",
            "city": "果洛",
            "province": "青海"
        },
        {
            "pm": 311,
            "aqi": 34,
            "aqi_level": "优",
            "city": "北屯",
            "province": "新疆"
        },
        {
            "pm": 312,
            "aqi": 33,
            "aqi_level": "优",
            "city": "舟山",
            "province": "浙江"
        },
        {
            "pm": 313,
            "aqi": 32,
            "aqi_level": "优",
            "city": "上海",
            "province": "上海"
        },
        {
            "pm": 314,
            "aqi": 32,
            "aqi_level": "优",
            "city": "黄山",
            "province": "安徽"
        },
        {
            "pm": 315,
            "aqi": 32,
            "aqi_level": "优",
            "city": "三明",
            "province": "福建"
        },
        {
            "pm": 316,
            "aqi": 32,
            "aqi_level": "优",
            "city": "汕尾",
            "province": "广东"
        },
        {
            "pm": 317,
            "aqi": 32,
            "aqi_level": "优",
            "city": "郴州",
            "province": "湖南"
        },
        {
            "pm": 318,
            "aqi": 31,
            "aqi_level": "优",
            "city": "遵义",
            "province": "贵州"
        },
        {
            "pm": 319,
            "aqi": 31,
            "aqi_level": "优",
            "city": "黔东南",
            "province": "贵州"
        },
        {
            "pm": 320,
            "aqi": 31,
            "aqi_level": "优",
            "city": "青岛",
            "province": "山东"
        },
        {
            "pm": 321,
            "aqi": 30,
            "aqi_level": "优",
            "city": "长沙",
            "province": "湖南"
        },
        {
            "pm": 322,
            "aqi": 30,
            "aqi_level": "优",
            "city": "广州",
            "province": "广东"
        },
        {
            "pm": 323,
            "aqi": 30,
            "aqi_level": "优",
            "city": "嘉兴",
            "province": "浙江"
        },
        {
            "pm": 324,
            "aqi": 30,
            "aqi_level": "优",
            "city": "莆田",
            "province": "福建"
        },
        {
            "pm": 325,
            "aqi": 30,
            "aqi_level": "优",
            "city": "塔城",
            "province": "新疆"
        },
        {
            "pm": 326,
            "aqi": 29,
            "aqi_level": "优",
            "city": "雅安",
            "province": "四川"
        },
        {
            "pm": 327,
            "aqi": 29,
            "aqi_level": "优",
            "city": "龙岩",
            "province": "福建"
        },
        {
            "pm": 328,
            "aqi": 29,
            "aqi_level": "优",
            "city": "宁德",
            "province": "福建"
        },
        {
            "pm": 329,
            "aqi": 29,
            "aqi_level": "优",
            "city": "衢州",
            "province": "浙江"
        },
        {
            "pm": 330,
            "aqi": 28,
            "aqi_level": "优",
            "city": "凉山",
            "province": "四川"
        },
        {
            "pm": 331,
            "aqi": 28,
            "aqi_level": "优",
            "city": "韶关",
            "province": "广东"
        },
        {
            "pm": 332,
            "aqi": 28,
            "aqi_level": "优",
            "city": "阿坝",
            "province": "四川"
        },
        {
            "pm": 333,
            "aqi": 28,
            "aqi_level": "优",
            "city": "宁波",
            "province": "浙江"
        },
        {
            "pm": 334,
            "aqi": 28,
            "aqi_level": "优",
            "city": "邵阳",
            "province": "湖南"
        },
        {
            "pm": 335,
            "aqi": 28,
            "aqi_level": "优",
            "city": "盐城",
            "province": "江苏"
        },
        {
            "pm": 336,
            "aqi": 28,
            "aqi_level": "优",
            "city": "南京",
            "province": "江苏"
        },
        {
            "pm": 337,
            "aqi": 27,
            "aqi_level": "优",
            "city": "台中",
            "province": "台湾"
        },
        {
            "pm": 338,
            "aqi": 27,
            "aqi_level": "优",
            "city": "黔南",
            "province": "贵州"
        },
        {
            "pm": 339,
            "aqi": 27,
            "aqi_level": "优",
            "city": "安顺",
            "province": "贵州"
        },
        {
            "pm": 340,
            "aqi": 27,
            "aqi_level": "优",
            "city": "池州",
            "province": "安徽"
        },
        {
            "pm": 341,
            "aqi": 27,
            "aqi_level": "优",
            "city": "大兴安岭",
            "province": "黑龙江"
        },
        {
            "pm": 342,
            "aqi": 26,
            "aqi_level": "优",
            "city": "贵阳",
            "province": "贵州"
        },
        {
            "pm": 343,
            "aqi": 26,
            "aqi_level": "优",
            "city": "香港",
            "province": "香港"
        },
        {
            "pm": 344,
            "aqi": 26,
            "aqi_level": "优",
            "city": "金华",
            "province": "浙江"
        },
        {
            "pm": 345,
            "aqi": 26,
            "aqi_level": "优",
            "city": "鹰潭",
            "province": "江西"
        },
        {
            "pm": 346,
            "aqi": 26,
            "aqi_level": "优",
            "city": "杭州",
            "province": "浙江"
        },
        {
            "pm": 347,
            "aqi": 26,
            "aqi_level": "优",
            "city": "黑河",
            "province": "黑龙江"
        },
        {
            "pm": 348,
            "aqi": 25,
            "aqi_level": "优",
            "city": "河源",
            "province": "广东"
        },
        {
            "pm": 349,
            "aqi": 25,
            "aqi_level": "优",
            "city": "漳州",
            "province": "福建"
        },
        {
            "pm": 350,
            "aqi": 25,
            "aqi_level": "优",
            "city": "铜陵",
            "province": "安徽"
        },
        {
            "pm": 351,
            "aqi": 25,
            "aqi_level": "优",
            "city": "芜湖",
            "province": "安徽"
        },
        {
            "pm": 352,
            "aqi": 25,
            "aqi_level": "优",
            "city": "南通",
            "province": "江苏"
        },
        {
            "pm": 353,
            "aqi": 24,
            "aqi_level": "优",
            "city": "福州",
            "province": "福建"
        },
        {
            "pm": 354,
            "aqi": 24,
            "aqi_level": "优",
            "city": "南平",
            "province": "福建"
        },
        {
            "pm": 355,
            "aqi": 24,
            "aqi_level": "优",
            "city": "阿里",
            "province": "西藏"
        },
        {
            "pm": 356,
            "aqi": 24,
            "aqi_level": "优",
            "city": "马鞍山",
            "province": "安徽"
        },
        {
            "pm": 357,
            "aqi": 24,
            "aqi_level": "优",
            "city": "昌都",
            "province": "西藏"
        },
        {
            "pm": 358,
            "aqi": 24,
            "aqi_level": "优",
            "city": "克拉玛依",
            "province": "新疆"
        },
        {
            "pm": 359,
            "aqi": 23,
            "aqi_level": "优",
            "city": "台州",
            "province": "浙江"
        },
        {
            "pm": 360,
            "aqi": 22,
            "aqi_level": "优",
            "city": "林芝",
            "province": "西藏"
        },
        {
            "pm": 361,
            "aqi": 21,
            "aqi_level": "优",
            "city": "温州",
            "province": "浙江"
        },
        {
            "pm": 362,
            "aqi": 21,
            "aqi_level": "优",
            "city": "贺州",
            "province": "广西"
        },
        {
            "pm": 363,
            "aqi": 21,
            "aqi_level": "优",
            "city": "梅州",
            "province": "广东"
        },
        {
            "pm": 364,
            "aqi": 21,
            "aqi_level": "优",
            "city": "甘孜",
            "province": "四川"
        },
        {
            "pm": 365,
            "aqi": 21,
            "aqi_level": "优",
            "city": "景德镇",
            "province": "江西"
        },
        {
            "pm": 366,
            "aqi": 20,
            "aqi_level": "优",
            "city": "宣城",
            "province": "安徽"
        },
        {
            "pm": 367,
            "aqi": 17,
            "aqi_level": "优",
            "city": "丽水",
            "province": "浙江"
        }
    ]
};
  return offline_data
}